/Engine/Source/Editor/EditorFramework/Public/Elements/Framework/TypedElementViewportInteraction.h
This list should have been pre-normalized viaUTypedElementSelectionSet::GetNormalizedSelectionorUTypedElementSelectionSet::GetNormalizedElementList, orFLevelEditorViewportClient::GetElementsToManipulate.
bool GetFocusBounds ( FTypedElementListConstRef InElements, FBoxSphereBounds & OutBox )